What are the performance comparisons between R32 refrigerant and R410A refrigerant?

Refrigerants are also called refrigeration working fluids, commonly known as refrigerants in some areas in the south. It is a working substance that continuously circulates in the refrigeration system and realizes refrigeration through its own state changes. The refrigerant vaporizes in the evaporator by the heat absorbed by the cooling medium (water or air, etc.), and transfers the heat to the surrounding air or water in the condenser to condense. Such as ammonia and water, lithium bromide and water, etc.; steam jet refrigerators use water as the refrigerant.

Refrigerant is a substance that transfers heat through evaporation and condensation in the air-conditioning system. A theoretical comparative analysis and experimental research on the cycle characteristics of r410a refrigerants and R32 refrigerants, which are currently used in the industry, are preliminarily shown:

1 Thermophysical properties: R32 charge can be reduced, only 0.71 times that of R410A. The working pressure of R32 system is higher than that of R410A, but the maximum increase does not exceed 2.6%, which is equivalent to the pressure requirements of R410A system. The maximum rise of R410A is as high as 35.3℃, and the existing compressor needs to be redesigned;

2, environmental protection characteristics: ODP value (ozone depletion potential) is 0, but R32 GWP The value (global warming potential) is moderate. Compared with R22, the CO2 emission reduction ratio can reach 77.6%, while R410A is only 2.5%, which is significantly better than R410A in terms of CO2 emission reduction;

3. Safety: Both R32 and R410A are non-toxic, while R32 is flammable, but among several alternatives to R22, R32, R290, R161, and R1234YF, R32 has the highest lower limit of combustion (LFL) and is the most difficult Burning, relatively safe; relatively speaking, R410a performance is more stable. R32 is flammable and explosive, and belongs to the currently immature refrigerant type. Although it has less destructive power on the atmospheric ozone layer, its safety has not been effectively verified.

4. Cycle performance: In terms of theoretical cycle performance, the cooling capacity of the R32 system is 12.6% higher than that of the R410A, the power consumption increases by 8.1%, and the overall energy saving is 4.3%. The experimental results are also It shows that the energy efficiency ratio of the refrigeration system using R32 is slightly higher than that of R410A. Considering that R32 has a greater potential to replace R410A.

On the whole, the use of R32 refrigerant and R410A refrigerant still have their own advantages. For greater breakthroughs in future refrigerants, other refrigerant models may be substituted.

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